Technical Specification
The sizes of the motors described in this catalogue are defined according to UNEL/IEC standards.
FRAMES
The motor frames are made of die-cast aluminium alloy. In order to achieve an excellent standard surface finish all frames are subject to sandblasting.| Main Features | |
|---|---|
| Protection | IP 54 |
| Insulation | Class F |
| Duty cycle | Continuous duty S1 |
| Ventilation | External |
| Rotor | Die-cast aluminium squirrel cage |
FLANGES AND SHIELDS
For motor sizes up to 132, die-cast aluminium alloy flanges and shields are standard fittings. Upon request they can be equipped with a steel ring inserted in the bearing housing. Shafts are normally made of C43 steel in compliance with international standards. For particular applications, shafts can be supplied in other grades of steel or produced upon customer’s designs.
BEARINGS
The bearings used on our motors are supplied by leading manufacturers and specifically designed for electric motors. They are rigid radial bearings with a single ring of balls (2Z), prelubricated with lithium grease and axially preloaded with compensation rings of tempered steel.
Upon request bearings lubricated with special high-temperature grease can be supplied. For particular applications, bearings can be supplied in other grades of steel or produced upon customer’s designs.
TYPE BEARINGS
| 56 | 6201 2Z |
| 63 | 6202 2Z |
| 71 | 6203 2Z |
| 80 | 6204 2Z |
| 90 | 6205 2Z |
| 100 | 6206 2Z |
| 112 | 6306 2Z |
| 132 | 6308 2Z |
| 160 | 6309 2Z |
ROTORS
We use cage rotors in die-cast aluminium or aluminium alloy. The rotors are dynamically balanced (with the key inserted on shaft) with a vibration rating of N (ISO2373). Upon request lower vibration levels can be supplied (R or S).
VENTILATION
External and surface ventilation is provided by radial, bidirectional fans set inside a stamped sheet metal fan cover. PAINTING Our motors are normally supplied unpainted. For orders of more than 50 pieces, different colours can be provided upon request.
PAINTING
Our motors are normally supplied unpainted. For orders of more than 50 pieces, different colours can be provided upon request.
| TOLERANCE LIMITS (IEC 72) | ||||
|---|---|---|---|---|
| Shafts | Size D | 50/112 | J6 | 132-160 K6 |
| Frames | Size H | from 0 a -0.5 mm | ||
| Flanges | Size N | 50/MEC 160 | J6 | |
The shaft shoulder is aligned with the flange plane.